Title (en)

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND PRODUCTION METHOD FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET

Title (de)

KORNORIENTIERTES ELEKTROSTAHLBLECH UND VERFAHREN ZUR HERSTELLUNG EINES KORNORIENTIERTEN ELEKTROSTAHLBLECHS

Title (fr)

TÔLE D'ACIER ÉLECTRIQUE À GRAINS ORIENTÉS ET PROCÉDÉ DE PRODUCTION D'UNE TÔLE D'ACIER ÉLECTRIQUE À GRAINS ORIENTÉS

Publication

EP 3534383 A4 20191023 (EN)

Application

EP 17883264 A 20171206

Priority

• JP 2016248070 A 20161221
• JP 2017043788 W 20171206

Abstract (en)

[origin: EP3534383A1] Provided are: a grain-oriented electrical steel sheet that has an excellent magnetic property and coating adhesiveness after stress relief annealing; and a production method therefor. This grain-oriented electrical steel sheet has: a steel sheet; a metal coating which contains a metal element and which is disposed on the steel sheet; a coating layer A which is a ceramic coating having an oxide content of less than 30 mass% and which is disposed on the metal coating; and a coating layer B which is an insulating tensile coating containing an oxide and which is disposed on the coating layer A, wherein the metal coating has a thickness of 1.0-10.0 nm, and in the metal element, the atomic radius ratio represented by formula (1) is at least 10%, when the atomic radius of iron is defined as RFe and the atomic radius of the metal element as RA. Formula (1): (|R-R|/R)×100.

IPC 8 full level

H01F 1/147 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/60 (2006.01); C23C 14/06 (2006.01); C23C 16/34 (2006.01); C23C 28/00 (2006.01)

CPC (source: EP KR RU US)

C21D 8/1283 (2013.01 - EP RU); C21D 8/1288 (2013.01 - EP); C21D 9/46 (2013.01 - KR RU); C22C 38/001 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/60 (2013.01 - EP KR); C23C 14/024 (2013.01 - EP); C23C 14/025 (2013.01 - EP); C23C 14/0605 (2013.01 - EP); C23C 14/0641 (2013.01 - EP KR US); C23C 14/0664 (2013.01 - KR); C23C 14/16 (2013.01 - EP); C23C 14/221 (2013.01 - EP US); C23C 14/32 (2013.01 - EP KR); C23C 14/325 (2013.01 - KR); C23C 16/34 (2013.01 - KR); C23C 22/08 (2013.01 - KR); C23C 22/74 (2013.01 - KR); C23C 26/00 (2013.01 - EP US); C23C 26/02 (2013.01 - EP); C23C 28/04 (2013.01 - US); C23C 28/32 (2013.01 - EP); C23C 28/321 (2013.01 - EP); C23C 28/322 (2013.01 - EP); C23C 28/34 (2013.01 - EP KR); C23C 28/341 (2013.01 - EP); C23C 28/345 (2013.01 - EP); C23C 28/3455 (2013.01 - EP); H01F 1/147 (2013.01 - EP KR RU US); C21D 9/46 (2013.01 - EP); C22C 2202/02 (2013.01 - US); Y10T 428/12549 (2015.01 - US)

Citation (search report)

• [XAI] JP 2002080959 A 20020322 - KAWASAKI STEEL CO
• [A] JP 2004099998 A 20040402 - JFE STEEL KK
• [A] JP 2005089810 A 20050407 - JFE STEEL KK
• [A] JP H046264 A 19920110 - KAWASAKI STEEL CO
• [A] JP H11222654 A 19990817 - KAWASAKI STEEL CO
• [A] JP S63250419 A 19881018 - KAWASAKI STEEL CO
• [XA] INOKUTI Y: "Structure at near-surface of TiN-coated grain oriented silicon steel sheet characterized by ultra-low iron loss", MATERIALS TRANSACTIONS, JIM MARCH 1997 JAPAN INST. METALS JAPAN, vol. 38, no. 3, 1 March 1997 (1997-03-01), pages 266 - 274, XP009516027, ISSN: 0916-1821
• [A] GOEL VISHU ET AL: "CrAlN coating to enhance the power loss and magnetostriction in grain oriented electrical steel", AIP ADVANCES, AMERICAN INSTITUTE OF PHYSICS, 2 HUNTINGTON QUADRANGLE, MELVILLE, NY 11747, vol. 6, no. 5, 11 March 2016 (2016-03-11), XP012205702, DOI: 10.1063/1.4944340
• [A] INOKUTI Y; SUZUKI K; KOBAYASHI Y: "Effect of difference in ion plating method on the magnetic properties of TiN-coated grain oriented silicon steel sheet", MATERIALS TRANSACTIONS, JIM AUG. 1995 JAPAN, vol. 36, no. 8, 1 August 1995 (1995-08-01), pages 1081 - 1087, XP009516030, ISSN: 0916-1821
• See also references of WO 2018116829A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3534383 A1 20190904; EP 3534383 A4 20191023; EP 3534383 B1 20240124; CN 110024058 A 20190716; CN 110024058 B 20220902; JP 6410002 B1 20181024; JP WO2018116829 A1 20181220; KR 102411857 B1 20220622; KR 20190083352 A 20190711; KR 20210130277 A 20211029; RU 2716271 C1 20200312; US 11180834 B2 20211123; US 2019390309 A1 20191226; WO 2018116829 A1 20180628

DOCDB simple family (application)

EP 17883264 A 20171206; CN 201780073544 A 20171206; JP 2017043788 W 20171206; JP 2018523038 A 20171206; KR 20197016170 A 20171206; KR 20217034321 A 20171206; RU 2019119296 A 20171206; US 201716471175 A 20171206